# 动态规划50题 https://www.bilibili.com/video/BV1aa411f7uT
# 23/50 最长的斐波那契子序列的长度
# leetcode第873题: https://leetcode.cn/problems/length-of-longest-fibonacci-subsequence/description/
# Date: 2024/11/12

def lenLongestFibSubseq(arr: list[int]) -> int:
    dp = [-1] * len(arr)
    dp.append()


if __name__ == '__main__':
    pass